Accelerometers
hello arduino community,
so working on project employs mma7361l accelerometer (1.5g / 6g), gps , arduino. talking how accelerometers work seems straightforward - output voltage proportional acceleration , these devices have associated sensitivity. example, datasheet (http://www.farnell.com/datasheets/1714645.pdf) in 6g mode sensitivity noted 206mv/g. question - why 206mv/g?
with 3.3v supply voltage, 1.65v output corresponds 0g. isn't theoretical 'sensitivity', has units of mv/g, given 1.65v / 6g = 0.275v?
so working on project employs mma7361l accelerometer (1.5g / 6g), gps , arduino. talking how accelerometers work seems straightforward - output voltage proportional acceleration , these devices have associated sensitivity. example, datasheet (http://www.farnell.com/datasheets/1714645.pdf) in 6g mode sensitivity noted 206mv/g. question - why 206mv/g?
with 3.3v supply voltage, 1.65v output corresponds 0g. isn't theoretical 'sensitivity', has units of mv/g, given 1.65v / 6g = 0.275v?
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why 206mv/g?you'll have ask manufacturer.
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now isn't theoretical 'sensitivity', has units of mv/g, given 1.65v / 6g = 0.275v?no, output vcc/2 0 g, plus possible offset need determine, in order calibrate device. excursions vcc/2 dictated acceleration , sensitivity.
Arduino Forum > Using Arduino > Sensors > Accelerometers
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